Edit File: README.pam_nologin
pam_nologin — Prevent non-root users from login ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ DESCRIPTION pam_nologin is a PAM module that prevents users from logging into the system when /etc/nologin exists. The contents of the /etc/nologin file are displayed to the user. The pam_nologin module has no effect on the root user's ability to log in. OPTIONS file=/path/nologin Use this file instead the default /etc/nologin. successok Return PAM_SUCCESS if no file exists, the default is PAM_IGNORE. EXAMPLES The suggested usage for /etc/pam.d/login is: auth required pam_nologin.so NOTES In order to make this module effective, all login methods should be secured by it. It should be used as a required method listed before any sufficient methods in order to get standard Unix nologin semantics. Note, the use of successok module argument causes the module to return PAM_SUCCESS and as such would break such a configuration - failing sufficient modules would lead to a successful login because the nologin module succeeded. AUTHOR pam_nologin was written by Michael K. Johnson <johnsonm@redhat.com>.
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